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Derbyia filosa
Taxonomy
Derbyia filosa was named by Cooper and Grant (1974). Its type specimen is USNM 153290c, a valve (Ventral valve), and it is not a trace fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Derbyia filosa Cooper and Grant pp. 300-302 figs. Pl 82, figs 1,2,11-36 |
| 1981 | Derbyia filosa Hoover p. 45 figs. Pl 2, figs 1-6 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Derbyia filosa Cooper and Grant 1974
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 6.40 |
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| Source: c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Kungurian to the top of the Capitanian or 283.30000 to 259.51000 Ma
Collections (28 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | Venezuela (Merida) | Derbyia filosa (41516) | |
| Roadian | USA (Texas) | Derbyia filosa (43518 43548 43551 43553 43554 81645 81650 81693 101767 102602 102605 105592 105726 105742 105850 105887 106021 106123) | |
| Roadian - Wordian | USA (Texas) | Derbyia filosa (102630) | |
| Wordian | USA (Texas) | Derbyia filosa (43526 43550 43552 105683 105764 105821 105934) | |
| Capitanian | USA (Texas) | Derbyia filosa (101809) |